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Drying of Nitrogen and Scale-Up of Column. Using molecular sieves, water vapor was removed from nitrogen gas in a packed bed {(33) at 233C. The...
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I havent understando how to do the exercise at all.

12.3-2. Drying of Nitrogen and Scale-Up of Column. Using molecular sieves, water
vapor was removed from nitrogen gas in a packed bed {(33) at 233°C. The
column height was 0. 268 m, with the bulk density of the solid bed being equal.
to 712.8 kg/tn3. The initial water concentration in the solid was 0 01 kg
waterlkg solid and the mass velocity of the nitrogen gas was 4052 kgfmz- The initial water concentration in the gas was eo=926&gt;&lt;10'5’ kg waterikg
nitrogen. The breakthrough data are as follows.
r (h) 0 9 9.2 9.6 10 10.4 C(kgnzoncguleoﬁ} &lt;0.6 0.0 2.6 21 91 235
:01) 10.3 11.25 11.5 12.0 12.5 12.3 C(kg Hzomgnzxiot) 413 630 717 355 906 926 A value of c/co = 0.02 is desired at the break point. Do as follows.
(:1) Determine the break-point time, the fraction of total capacity used up to
the break point, the length of the unused bed, and the saturation loading capacity of the solid
03) For a proposed column length H;- = O. 40 tn, calculate the brealo-point time and fraction of total capacity used

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